openat-priv.h

/* Internals for openat-like functions. Copyright (C) 2005, 2006 Free Software Foundation, Inc. This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. *//* written by Jim Meyering */#include <errno.h>#include <stdlib.h>#define OPENAT_BUFFER_SIZE 512char *openat_proc_name (char buf[OPENAT_BUFFER_SIZE], int fd, charconst *file);
/* Some systems don't have ENOSYS. */#ifndef ENOSYS# ifdef ENOTSUP# define ENOSYS ENOTSUP# else/* Some systems don't have ENOTSUP either. */# define ENOSYS EINVAL# endif#endif/* Some systems don't have EOPNOTSUPP. */#ifndef EOPNOTSUPP# ifdef ENOTSUP# define EOPNOTSUPP ENOTSUP# else/* Some systems don't have ENOTSUP either. */# define EOPNOTSUPP EINVAL# endif#endif/* Trying to access a BUILD_PROC_NAME file will fail on systems without /proc support, and even on systems *with* ProcFS support. Return nonzero if the failure may be legitimate, e.g., because /proc is not readable, or the particular .../fd/N directory is not present. */#define EXPECTED_ERRNO(Errno) \ ((Errno) == ENOTDIR || (Errno) == ENOENT \ || (Errno) == EPERM || (Errno) == EACCES \ || (Errno) == ENOSYS /* Solaris 8 */ \
|| (Errno) == EOPNOTSUPP /* FreeBSD */)